1970: Peter, Paul and Mary: Leavin' On A Jet Plane
Leavin' On A Jet Plane was the folk trio's fourth and final UK hit and their only record to enter the British Top 10.
In America, the single topped the Billboard chart for one week in December 1969.
It peaked at Number 2 in the UK for a single week in February 1970 when Edison Lighthouse's Love Grows (Where My Rosemary Goes) occupied the Number 1 spot.
It remained on the British chart for a run of 16 weeks.
Written by John Denver, it featured on his 1966 album John Denver Sings under the title Babe, I Hate to Go.
The song was first recorded by Peter, Paul and Mary for their 1967 long player Album 1700, but it wasn't released as a single until 1969.
Denver re-recorded versions of the song for his 1969 LP Rhymes and Reasons and the 1973 compilation John Denver's Greatest Hits.
Chiquitita was the eleventh Top 5 hit in the UK for ABBA and followed seven Number One hits by the Swedish supergroup.
As with the majority of ABBA singles, the song was written by group members Benny Andersson and Björn Ulvaeus.
The single also peaked at Number 2 in the group's homeland.
The track remained at Number 2 in the UK for a fortnight, prevented from getting to the top by Blondie's Heart of Glass.
Chiquitita achieved the highest placing debut position on the UK Singles Chart of any of their releases (Number 8), but only stuck around for nine weeks.
Elsewhere, the track became a Number 1 hit including countries such as Belgium, Finland, Ireland, the Netherlands, New Zealand, Spain, Switzerland, Mexico and South Africa.
Among the working titles for the song were 3 Wise Guys, In the Arms of Rosalita and Chiquitita Angelina.
Ever since 1979, 50% of the royalties from the song have been donated to UNICEF due to it featuring in a UNICEF charity event: the Music for UNICEF Concert.
Come Back My Love was the second UK hit by British doo-wop revival group Darts following the Number 6 success of Daddy Cool.
The song was written by Bobby Mansfield, a member of the American R&B vocal group The Wrens. They recorded it in 1955 and it became one of their best-known recordings.
This single was the first of three consecutive No. 2 hits for Darts in 1978.
It was prevented from hitting the top spot by ABBA's Take A Chance on Me which was on the last week of its three-week run as the UK's best seller.
The track remained at Number 2 for a single week during its 12-week chart run.
Come Back My Love is included on the band's debut album, simply called Darts.
After two false starts, Boogie Nights became Heatwave's first UK Top 40 hit, emulated in the USA where it also peaked at Number 2.
The track climbed to Number 2 in the UK charts for a single week in early March 1977, blocked from the top of the charts by Leo Sayer's When I Need You.
In the US, the song was held off the Number 1 spot for two weeks by Debby Boone's You Light Up My Life.
It went to Number 1 in New Zealand but also stalled at Number 2 in Canada.
The single earned a platinum disc in the US and went silver in the UK.
It accumulated a total of fourteen weeks within the UK Top 50.
The track was written by band member (the late) Rod Temperton who would go on to compose many big hits for the likes of Michael Jackson, George Benson and The Brothers Johnson.
Boogie Nights can be found on Heatwave's debut album, Too Hot to Handle.
Strangely, the song is not included on either of the two soundtracks released for the film of the same name.
Never Can Say Goodbye was Gloria Gaynor's first transatlantic hit although she had appeared on the US Dance chart at Number 2 in 1974 with the track, Honey Bee.
The single peaked at Number 2 on the UK charts in mid-January 1975 for a sole week, denied the Number 1 spot by The Tymes' Ms Grace.
The single accumulated a run of thirteen weeks within the UK Top 50, earning a Silver disc.
The song was originally recorded by The Jackson 5 who took it to Number 2 on the US Billboard Hot 100 in 1971. Their recording could only manage a peak of Number 33 in Britain.
Gloria Gaynor's version has the distinction of holding the Number 1 spot on the very first Dance/Disco chart ever to appear in Billboard magazine.
The song is the title track to Gaynor's debut album which peaked within the Top 40 of the UK album chart and established the singer as one of the earliest disco performers .
Gloria Gaynor appeared several times on the British Singles Chart over the succeeding years, most notably in 1979 when I Will Survive occupied the Number 1 position for four weeks..
It peaked at Number 2 in the British charts in mid-January 1976 for two weeks, denied the Number 1 spot by Queen's Bohemian Rhapsody.
The single amassed a run of twelve weeks within the UK Top 50.
It topped the Irish charts and climbed to Number 4 in Australia.
The song was written by lead singer and band co-founder Georg Kajanus.
Kajanus's recollections of his time in the red light district of Paris are reflected in the lyrics of A Glass of Champagne.
The track is included on Sailor's second album Trouble, along with the UK Top 10 follow-up Girls, Girls, Girls. It can also be found on the band's Greatest Hits compilation.
The group only managed to enter the UK Top 40 on one other occasion with the song One Drink Too Many before disappearing.
It spent a total of twenty weeks in the UK Top 50.
In the UK alone, the record sold more than a quarter of a million copies.
Worldwide sales topped 2.5 million with Japan contributing about 400,000 to that number.
The song was included on Reid's first long player which itself went to Number 1 on the UK's Album Chart. This made the Scot the youngest recording artist to achieve the feat - a record which still stands today.
Elvis's version of Suspicious Minds peaked at Number 2 in the UK in January 1970, making it the first single of the Seventies to do so.
It was held off the Number 1 position for one week by Two Little Boys from Rolf Harris.
It peaked at Number 1 in the US in November 1969, Presley's first American chart-topper in seven years.
Suspicious Minds was Elvis's final US Number 1, although he would return to the top of the UK charts in 1970 with The Wonder of You. He had several posthumous Number 1 hits in the UK, including Way Down which climbed to the top just after his death in 1977.
The recording features the famous false ending - the producer adding an early fade before a booming Presley returns with his ongoing repetition of the chorus.
The song prompted a dispute about money between Elvis and his manager Colonel Parker when the copyright owner turned down demands to surrender a percentage of the publishing royalties. Presley won out in the end.
The single has appeared on the UK chart on three separate occasions: its original 1969 release, a 2001 re-release (#15 peak) and a 2007 release to commemorate the 30th anniversary of Presley's death (#11 peak).
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